Guard for smoking-pipes.



O. H. ROBINSON.

GUARD FOR SMOKING PIPES. APPLIOAIIION FILED JUNE 12, 1912.

Patented Dec. 28, 1913.

UNITED SATES PATENT OFFICE.

CHARLES H. ROBINSON, OF DEADWOQD, SOUTH DAKOTA.

GUARD FOR SMOKING-PIPES.

Specification of Letters Patent.

Patented Dec. 23, 1913.

Application filed June 12, 1912. Serial no. 703,258.

bottom of the bowl of a tobacco pipe and disposed at a point immediately in advance of the smoke duct of the pipe so as to prevent the clogging of the latter by small particles of .tobacco, and further the construction of a uard wherein the central portion thereof wi l consist of relatively close'conVolutions which are located directly above the draft opening of the bore and designed to prevent the small articles-of tobacco from eing drawn into t e bore, and outer convolutions which are spaced relatively so as to permit of the required draft.

In the draw in forming a ortion of this application, an in which ike letters of reference indicate similar parts in the several views: Figure l is a perspective view of the guard. Fig. 2 is a section through the guard and through the bowl of a pipe showing the application of the former to the latter. Fig, 3 is a section through the guard, showing the same on an enlarged scale.

The device is constructed from a single length of wire which is bent to rovide an inner spiral or convolute horizo tally disposed portion "1 whose convolutions 2 are spaced relatively whereby said guard is rendered substantially foraminou's to permit of a perfect draft of the pipe. The outermost convolution 2 of the portion 1 is extended into a substantially annular sustaining'or supporting portion 3 having its free terminal bent upwardly to lie against the inner wall of the bowl of the pipe 4 herein shown and provided with a hook 5 which is adapted to embrace the upper edge of the bowl.

The portion 1 of the ard is disposed adjacent to the bottom 0 the bowl of the pipe and immediately in advance of the duct 6 in the stem 7, being designed to support the tobacco in such manner that it will be held against being drawn into the duct 6 when draft is applied to the stem, thereby preventing the choking of the duct as will be understood.

.T he device is such that the portion 1 may be slightly expanded if desired whereby it will readily accommodate itself to the inner diameter of the bowl. inner convolutions 2 of the portion 1 are disposed in closer relation than the outer con-- volutions whereby to give the article the maximum effectiveness immediately above the duct 6 and to prevent small particles of tobacco from escaping through the guard at the center thereof. It is also said that the device as illustrated herein will positively prevent the accumulation of tobacco in the extreme bottom of the bowl which lends admirably toward preventing the clogging of the smoke duct.

I claim As a new article of manufacture, a guard for smoking pipes, comprising a single It is stated that the length of Wire having a charge supporting portion provided with many convolutions cxtendin into each other and arranged so that the inner convolutions are arranged in mutual contact relatively and the outer convolutions spaced relatively, the outermost convolution having a vertical supporting extension adapted to lie against the inner wall of thebowl of the pipe and havingmeans for connecting with the bowl so as to hold the charge supporting portion in operativeposition. In testimony whereof I aflix my signature in presence of two witnesses.

CHARLES H. ROBINSON.

Witnesses:

WILLIAM T. Honems, JOSEPH SCHULTE. 

